Neuroimaging findings: All our patients underwent either cerebral computed tomography or brain magnetic resonance imaging (MRI) on admission. Magnetic resonance imaging was not performed for all the included patients because of either medical contraindication or logistic difficulties. It was performed using a 1-T machine. The images were obtained using T1-weighted, T2-weighted, and fluid-attenuated inversion recovery sequences in the sagittal, axial, and coronal planes.
Routine laboratory tests.